V-Link® -mXRS™ Wireless Voltage Node

Submitted by scott on Fri, 08/12/2011 - 15:30

V-Link^® -mXRS^™ Wireless Voltage Node

Features precision time-keeping and extended range capabilities

Overview

Fast, compact, & extremely versatile, V-Link® wireless voltage nodes are designed to operate as part of a high speed wireless sensor network.

Featuring 2 KHz sweep rates, combined with 2 MB flash memory, these little nodes pack a lot of power in a small package. With every node in the wireless network assigned a unique 16 bit address, a single host transceiver can address thousands of multi-channel sensor clusters.

On-board sensor excitation, bridge completion, programmable gains & offsets, and differential & single ended inputs provide an extremely versatile sensor interface.

At the heart of MicroStrain’s extended range synchronized (mXRS™) system is the WSDA®-Base, which uses our exclusive beaconing protocols to synch precision timekeepers embedded within each sensor node in the network. The WSDA®-Base also coordinates data collection from all sensor nodes, including V-LINK® -mXRS. Users can easily program each node on the scalable network for simultaneous, periodic, or burst mode sampling with our Node Commander® software, which then automatically configures network radio communications to maximize the aggregate sample rate.

Applications

condition-based monitoring of machines
health monitoring of structures and vehicles
smart structures and materials
experimental test and measurement
robotics and machine automation
vibration and acoustic noise testing
sports performance and sports medicine analysis
distributed security networks

2.4 GHz direct sequence spread spectrum radio is license free worldwide
IEEE 802.15.4 open communication architecture
supports simultaneous streaming from multiple nodes
datalogging rates up to 2048 Hz, storing up to 1,000,000 measurements
real-time streaming rates up to 4 KHz
communication range up to 70 m line-of-sight, 300 m with high gain antennas
regulated 3 volt sensor excitation supports most analog sensors
on-board bridge completion resistors
includes internal resistor for wireless shunt calibration
low power consumption for extended use
internal rechargeable battery
SensorCloud™ ready

Input Channels

Up to 8 input channels: 4 full differential, 350 Ω resistance or higher (with optional bridge completion), 3 single ended inputs (0-3 volts maximum), and internal temperature sensor

Temperature Sensor

-40˚C to +70˚C range, accuracy ±2˚C (at 25˚C)

Anti-aliasing Filter Bandwidth

-3 dB cutoff at 250 Hz (factory adjustable)

Measurement Accuracy

±0.1% full scale typical

Resolution

1 bit: 0.024%
1 microstrain typical for 3 wire full bridge strain gauge (when used in accordance with MicroStrain® recommendations)

DC Bridge Excitation

+3 volts DC at 50 mA maximum (pulsed to sensors for sample rates of 100 Hz and below to conserve power)

Programmable Gain

Software programmable for differential input channels from 210 to 4844 (can be reduced with hardware resistor change)

Programmable Offset

Software programmable

Analog to Digital (A/D) Converter

Successive approximation type, 12 bit resolution

Data Storage Capacity

2 megabytes (approximately 1,000,000 data points)

Data Logging Mode

Log up to 1 million data points at sampling rates from 32Hz to 2048Hz per channel in fixed (from 100 to 65,500 samples) or continuous (until memory full) sessions

Sensor Event Driven Trigger

Commence datalogging when threshold exceeded

Real-time Streaming Mode

Transmit real time data from node to PC - rate depends on number of active channels: 1 channel - 4 KHz, 2 channels - 2 KHz, 3 channels - 1.33 KHz, 4 channels - 1 KHz, 5 channels - 800 Hz, 6 channels - 666 Hz, 7 channels - 570 Hz, 8 channels - 500 Hz

Low Duty-cycle Mode

Supports multiple nodes on single RF channel

Synchronization Between Nodes

Datalogging ±4 µsec ±50 ppm, LDC mode time stamped at PC

Sample Rate Stability

±25 ppm for sample rates > 1 Hz, ±10% for sample rates < 1 Hz

Wireless Shunt Calibration

Channels 1 to 4, internal shunt calibration resistor 499 KΩ

Radio Frequency (RF) Transceiver Carrier

2.4 GHz direct sequence spread spectrum, license free worldwide (2.405 to 2.480 GHz) - 16 channels, radiated power 0 dBm (1mW)

RF Data Packet Standard

IEEE 802.15.4, open communication architecture

RF Data Downloading

8 minutes to download full memory

Range for Bi-directional RF Link

programmable communication range from 70m to 2,000m

Internal Li-Ion Battery

3.7 volt lithium ion rechargeable battery, 600 mAh capacity
Customer may supply external power from 3.2 to 9 volts

Power Consumption

V-Link® node only: real-time streaming - 25 mA, datalogging - 25 mA, sleeping - 0.5 mA
External sensors: 350 Ω strain gauge - 8 mA, 1000 Ω strain gauge - 3 mA (add sensor consumption to above to calculate total power consumption)

Operating Temperature

-20˚C to +60˚C with standard internal battery and enclosure, extended temperature range optional with custom battery and enclosure. -40˚C to +85˚C for electronics only

Maximum Acceleration Limit

500 g standard (high g option available)

Dimensions

88 mm x 72 mm x 26 mm (enclosure without antenna)
72 mm x 65 mm x 12 mm(circuit board assembly only)
For dimensioned print go to Documentation tab

Weight

97 grams (with enclosure)

Enclosure Material

ABS plastic

Software

Node Commander® Windows XP/Vista compatible

Compatible Base Stations

WSDA®, WSDA® -Base

General Documentation
Software Development Kit
- MicroStrain Wireless Sensor Networks Software Development Kit (SDK)
Mechanical Prints
Technical Notes
FAQ's
- Wireless FAQ's

Product Contact Form

Submitted by scott on Tue, 07/19/2011 - 10:51

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WSDA-Base Station Starter Kit + V-Link Wireless Voltage Node

Online Price: $1,790.00 Part Numbers: 6307-xxxx / 6312-1000	Includes: V-Link Sensor (adjust quantity in shopping cart) Base station (select which type on the right) Required cabling Node Commander software Node charger	WSDA-Base Starter Kit (includes software & cables) WSDA-Base Options (required) * WSDA-Base Analog, +$200.00 WSDA-Base RS-232 WSDA-Base USB

Microstrain

V-Link® -mXRS™ Wireless Voltage Node

V-Link^® -mXRS^™ Wireless Voltage Node

Product Contact Form

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